baustin wrote:Oct 12, 2017Fourth bar finally dropped on the way home after running some errands. Plugged it in to charge and then took a reading. Appointment to start warranty replacement scheduled for 17 October 2017.

The vehicle was manufactured in January 2013, spent it first two years in Georgia, was auctioned after lease return and brought to Las Vegas. I got it in March 2015. It dropped the first bar in October 2015, the second bar in June 2016, the third bar in November 2016, and the fourth bar in October 2017.

How often do you recharge ? By your data it looks improbably frequent.

By the way, I graphed your data. No obvious rhyme or reason to when you lost capacity

I have it set to charge every day, but it is on a timer, so it counts once when plugged in and once again when the charging timer activates (even if the battery doesn't need charged).

The vehicle was made in January 2013, so the cells inside the battery are the 2012 chemistry. The change in environment, bringing it to Las Vegas, accelerated the degradation. There appears to be a distance component to the bar dropping algorithm in the Leaf. I drove it a lot during the first two years, and not as much this year, which seems to have delayed the drop. I expected it to happen months ago, and it may have, if I had been driving it more.

SageBrush wrote:How often do you recharge ? By your data it looks improbably frequent.

I have it set to charge every day, but it is on a timer, so it counts once when plugged in and once again when the charging timer activates (even if the battery doesn't need charged).

The vehicle was made in January 2013, so the cells inside the battery are the 2012 chemistry. The change in environment, bringing it to Las Vegas, accelerated the degradation. There appears to be a distance component to the bar dropping algorithm in the Leaf. I drove it a lot during the first two years, and not as much this year, which seems to have delayed the drop. I expected it to happen months ago, and it may have, if I had been driving it more.

Charges up to 80 or 100% every day ?Thanks for the charge counter tip. That probably explains why I sometimes see unusually high counts in other posts.

SageBrush wrote:How often do you recharge ? By your data it looks improbably frequent.

I have it set to charge every day, but it is on a timer, so it counts once when plugged in and once again when the charging timer activates (even if the battery doesn't need charged).

The vehicle was made in January 2013, so the cells inside the battery are the 2012 chemistry. The change in environment, bringing it to Las Vegas, accelerated the degradation. There appears to be a distance component to the bar dropping algorithm in the Leaf. I drove it a lot during the first two years, and not as much this year, which seems to have delayed the drop. I expected it to happen months ago, and it may have, if I had been driving it more.

Charges up to 80 or 100% every day ?Thanks for the charge counter tip. That probably explains why I sometimes see unusually high counts in other posts.

I started out charging to 80% every day, and 100% when needed for range and periodically to balance the cells. Now it is 100% every day, and that is no longer enough to get me across the valley and back.

I bought a ‘13 Leaf S+QC about ten days ago for $8,000 to get me through until my Model 3 shows up. The Leaf was manufactured 1/13 and was missing three capacity bars with 36,715 miles on the odometer. I called 877-NOGASEV before taking delivery and confirmed the capacity warranty was valid and in effect until 3/31/18 or 60,000 miles.

The Leafspy stats at delivery were 42.63 Ah 65% SOH with 2 QCs and 1355 L1/L2. Carfax says it was a Hawaii car before heading to auction after the lease.

Today at lunch it dropped the fourth bar after a quick charge. The stats have been bouncing around a bit since I’ve had the car (Ah range of 41.58 to 42.65, SOH 63-65%) but at the bar drop LeafSpy read 42.60Ah/65%SOH/58.45%Hx with 15 QCs and 1367 L1/L2 at 37,254 miles.

I don’t need much range day to day and my inclination is to wait until March 20th or so before filing a warranty claim. The Facebook group seems to say that’s stupid and Nissan will look for excuses, therefore I should make the claim ASAP. Thoughts?

with only 5 months left and entering the cooler months, I say just get it scheduled now. Also, at the moment Nissan is replacing them with new packs. At some point they announced that they're only responsible to bring you up to "better than 4 bars of loss".

If it was my car, I'd get it done now. It'll also take a few weeks to get the battery into the dealer.

I took mine in today to get the warranty replacement started. Initially, they told me it would take about two hours. When I got there, all they said they needed was to plug in the Consult Tool and get a battery status printout of only 8 bars showing. They're supposed to call tomorrow, after it's ordered, to tell me when the replacement battery will arrive.

baustin wrote:I took mine in today to get the warranty replacement started. Initially, they told me it would take about two hours. When I got there, all they said they needed was to plug in the Consult Tool and get a battery status printout of only 8 bars showing. They're supposed to call tomorrow, after it's ordered, to tell me when the replacement battery will arrive.

Replacement traction battery arrived on October 19th and installed this morning. I took this reading just before I left the dealership.

silverone wrote:I was surprised I didn't see much discussion about these swings or the effect of cold ambient temperature, because they'd be critical in evaluating a used car for someone in a cold climate. Battery temperatures didn't swing as wildly or seem to have as much of an effect.

I have Leaf Spy running on a spare phone almost all the time and logging to Dropbox. Although these are my max/min readings over a timeframe, none are really outliers from the surrounding data. It seems to take about 3 days for readings to stabilize after a big ambient temperature swing.

I've also seen GIDs at 100% charge swing accordingly from 259 to 284 over the same timeframe, although they seem to max out at 284 for any AHr reading above the high 65 range.

Based on the way the data is trending for my car, I may have a low enough AHr reading by mid summer to lose a bar after showing 103+ Hx at times in the winter! Perhaps if things continue I'll make and publish a trend of the data.

I have definitely seen a trend of Ahr/SOH swinging fairly consistently with ambient temperature since I started tracking data in November 2015. I first posted about it in my regular 6 month cost update Nov 2016 http://kootenayevfamily.ca/cost-update- ... 2-5-years/ (scroll down to the header on LeafSpy). The pattern continued through last winter, noted at http://kootenayevfamily.ca/cost-update- ... 117000-km/ in May of this year. I saw the trend continue into the summer - in June 2017 my Ahr reached 55.89 and 85% SOH again (same as from the previous August, after going to a high of 93%.

I finally lost my first bar after being below 85% for a few months on August 31, 2017. Stats as follows:Ahr=54.50, SOH=83%, Hx=79.72%, odo=127,413km, 53 QCs(I haven't posted the L1/L2s, because I often use the charge timer, which inflates this value substantially, counts once when you plug in, another when it starts charging)

I'm now 4,000 km further along here into October, and my stats are now back to (as of Oct 10):Ahr=55.68, SOH=85%, Hx=82.63%, odo=131,562kmThe lost bar hasn't re-appeared... but I'll be curious to see if it does!

We had a nice hot summer from June through first two weeks of September (+30C most days), then high 20C throughout September, and only recently has it cooled down and become rainy. Start here -> http://climate.weather.gc.ca/climate_da ... 7&Month=6#, and click on the next month button to flip through and get an idea of the temps the car sits in all day long in a baking asphalt parking lot. At night, it is in a carport that is built into north-facing hillside, so it does get a chance to cool down usually to 5 or 6 bars, but each day was up to 7. Now with the cool weather in October, starting each day with 4 bars, and after charging for a few hours just before I leave work, it is back up to 5 bars.

TLDR; - in my experience, you can only trend your own personal LeafSpy data year-over-year with roughly similar climate conditions. So I'll carry on and expect to see 87-88% SOH by November, where it will plateau for a few months, then drop right back down in the spring and reach a low by the end of summer 2018. I'm going to take a stab at 80% (assuming I continue with similar commute).